package com.punai.system.service.impl;

import java.util.ArrayList;
import java.util.Comparator;
import java.util.Iterator;
import java.util.List;
import java.util.stream.Collectors;

import cn.hutool.core.collection.CollUtil;
import cn.hutool.core.util.IdUtil;
import cn.hutool.core.util.StrUtil;
import com.baomidou.mybatisplus.core.toolkit.Wrappers;
import com.punai.common.core.domain.CommonConstants;
import com.punai.common.core.domain.entity.SysCompany;
import com.punai.common.core.domain.model.LoginUser;
import com.punai.system.mapper.SysCompanyMapper;
import org.apache.commons.collections4.ListValuedMap;
import org.apache.commons.collections4.multimap.ArrayListValuedHashMap;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import com.punai.common.annotation.DataScope;
import com.punai.common.constant.UserConstants;
import com.punai.common.core.domain.TreeSelect;
import com.punai.common.core.domain.entity.SysDept;
import com.punai.common.core.domain.entity.SysRole;
import com.punai.common.core.domain.entity.SysUser;
import com.punai.common.core.text.Convert;
import com.punai.common.exception.ServiceException;
import com.punai.common.utils.SecurityUtils;
import com.punai.common.utils.StringUtils;
import com.punai.common.utils.spring.SpringUtils;
import com.punai.system.mapper.SysDeptMapper;
import com.punai.system.mapper.SysRoleMapper;
import com.punai.system.service.ISysDeptService;

/**
 * 部门管理 服务实现
 * 
 * @author ruoyi
 */
@Service
public class SysDeptServiceImpl implements ISysDeptService
{
    @Autowired
    private SysDeptMapper deptMapper;

    @Autowired
    private SysRoleMapper roleMapper;

    @Autowired
    private SysCompanyMapper companyMapper;

    /**
     * 查询部门管理数据
     * 
     * @param dept 部门信息
     * @return 部门信息集合
     */
    @Override
    @DataScope(deptAlias = "d",companyAlias = "d")
    public List<SysDept> selectDeptList(SysDept dept)
    {
        return deptMapper.selectDeptList(dept);
    }

    /**
     * 查询部门树结构信息
     * 
     * @param dept 部门信息
     * @return 部门树信息集合
     */
    @Override
    public List<TreeSelect> selectDeptTreeList(SysDept dept)
    {
        List<SysDept> depts = SpringUtils.getAopProxy(this).selectDeptList(dept);
        return buildDeptTreeSelect(depts);
    }

    /**
     * 构建前端所需要树结构
     * 
     * @param depts 部门列表
     * @return 树结构列表
     */
    @Override
    public List<SysDept> buildDeptTree(List<SysDept> depts)
    {
        List<SysDept> returnList = new ArrayList<SysDept>();
        List<Long> tempList = new ArrayList<Long>();
        for (SysDept dept : depts)
        {
            tempList.add(dept.getDeptId());
        }
        for (SysDept dept : depts)
        {
            // 如果是顶级节点, 遍历该父节点的所有子节点
            if (!tempList.contains(dept.getParentId()))
            {
                recursionFn(depts, dept);
                returnList.add(dept);
            }
        }
        if (returnList.isEmpty())
        {
            returnList = depts;
        }
        return returnList;
    }

    /**
     * 构建前端所需要下拉树结构
     * 
     * @param depts 部门列表
     * @return 下拉树结构列表
     */
    @Override
    public List<TreeSelect> buildDeptTreeSelect(List<SysDept> depts)
    {
        List<SysDept> deptTrees = buildDeptTree(depts);
        return deptTrees.stream().map(TreeSelect::new).collect(Collectors.toList());
    }

    /**
     * 根据角色ID查询部门树信息
     * 
     * @param roleId 角色ID
     * @return 选中部门列表
     */
    @Override
    public List<Long> selectDeptListByRoleId(Long roleId)
    {
        SysRole role = roleMapper.selectRoleById(roleId);
        return deptMapper.selectDeptListByRoleId(roleId, role.isDeptCheckStrictly());
    }

    /**
     * 根据部门ID查询信息
     * 
     * @param deptId 部门ID
     * @return 部门信息
     */
    @Override
    public SysDept selectDeptById(Long deptId)
    {
//        return deptMapper.selectById(deptId);
        return deptMapper.selectDeptById(deptId);
    }

    /**
     * 根据ID查询所有子部门（正常状态）
     * 
     * @param deptId 部门ID
     * @return 子部门数
     */
    @Override
    public int selectNormalChildrenDeptById(Long deptId)
    {
        return deptMapper.selectNormalChildrenDeptById(deptId);
    }

    /**
     * 是否存在子节点
     * 
     * @param deptId 部门ID
     * @return 结果
     */
    @Override
    public boolean hasChildByDeptId(Long deptId)
    {
        int result = deptMapper.hasChildByDeptId(deptId);
        return result > 0;
    }

    /**
     * 查询部门是否存在用户
     * 
     * @param deptId 部门ID
     * @return 结果 true 存在 false 不存在
     */
    @Override
    public boolean checkDeptExistUser(Long deptId)
    {
        int result = deptMapper.checkDeptExistUser(deptId);
        return result > 0;
    }

    /**
     * 校验部门名称是否唯一
     * 
     * @param dept 部门信息
     * @return 结果
     */
    @Override
    public String checkDeptNameUnique(SysDept dept)
    {
        Long deptId = StringUtils.isNull(dept.getDeptId()) ? -1L : dept.getDeptId();
        SysDept info = deptMapper.checkDeptNameUnique(dept.getDeptName(), dept.getParentId());
        if (StringUtils.isNotNull(info) && info.getDeptId().longValue() != deptId.longValue())
        {
            return UserConstants.NOT_UNIQUE;
        }
        return UserConstants.UNIQUE;
    }

    /**
     * 校验部门是否有数据权限
     * 
     * @param deptId 部门id
     */
    @Override
    public void checkDeptDataScope(Long deptId)
    {
        if (!SysUser.isAdmin(SecurityUtils.getUserId()))
        {
            SysDept dept = new SysDept();
            dept.setDeptId(deptId);
            List<SysDept> depts = SpringUtils.getAopProxy(this).selectDeptList(dept);
            if (StringUtils.isEmpty(depts))
            {
                throw new ServiceException("没有权限访问部门数据！");
            }
        }
    }

    /**
     * 新增保存部门信息
     * 
     * @param dept 部门信息
     * @return 结果
     */
    @Override
    public int insertDept(SysDept dept)
    {
        if (dept.getParentId() != null) {
            SysDept info = deptMapper.selectDeptById(dept.getParentId());
            // 如果父节点不为正常状态,则不允许新增子节点
            if (!UserConstants.DEPT_NORMAL.equals(info.getStatus()))
            {
                throw new ServiceException("部门停用，不允许新增");
            }
            dept.setAncestors(info.getAncestors() + "," + dept.getParentId());
        } else {
            dept.setParentId(0L);
            dept.setAncestors("0");
        }
        dept.setDeptCode(IdUtil.nanoId(8));
        dept.setCompanyId(SecurityUtils.getCompanyId());
        int i = deptMapper.insertDept(dept);
        return i;
    }

    /**
     * 修改保存部门信息
     * 
     * @param dept 部门信息
     * @return 结果
     */
    @Override
    public int updateDept(SysDept dept)
    {
        SysDept newParentDept = deptMapper.selectDeptById(dept.getParentId());
        SysDept oldDept = deptMapper.selectDeptById(dept.getDeptId());
        if (StringUtils.isNotNull(newParentDept) && StringUtils.isNotNull(oldDept))
        {
            String newAncestors = newParentDept.getAncestors() + "," + newParentDept.getDeptId();
            String oldAncestors = oldDept.getAncestors();
            dept.setAncestors(newAncestors);
            updateDeptChildren(dept.getDeptId(), newAncestors, oldAncestors);
        }
        int result = deptMapper.updateDept(dept);
        if (UserConstants.DEPT_NORMAL.equals(dept.getStatus()) && StringUtils.isNotEmpty(dept.getAncestors())
                && !StringUtils.equals("0", dept.getAncestors()))
        {
            // 如果该部门是启用状态，则启用该部门的所有上级部门
            updateParentDeptStatusNormal(dept);
        }
        return result;
    }

    /**
     * 修改该部门的父级部门状态
     * 
     * @param dept 当前部门
     */
    private void updateParentDeptStatusNormal(SysDept dept)
    {
        String ancestors = dept.getAncestors();
        Long[] deptIds = Convert.toLongArray(ancestors);
        deptMapper.updateDeptStatusNormal(deptIds);
    }

    /**
     * 修改子元素关系
     * 
     * @param deptId 被修改的部门ID
     * @param newAncestors 新的父ID集合
     * @param oldAncestors 旧的父ID集合
     */
    public void updateDeptChildren(Long deptId, String newAncestors, String oldAncestors)
    {
        List<SysDept> children = deptMapper.selectChildrenDeptById(deptId);
        for (SysDept child : children)
        {
            child.setAncestors(child.getAncestors().replaceFirst(oldAncestors, newAncestors));
        }
        if (children.size() > 0)
        {
            deptMapper.updateDeptChildren(children);
        }
    }

    /**
     * 删除部门管理信息
     * 
     * @param deptId 部门ID
     * @return 结果
     */
    @Override
    public int deleteDeptById(Long deptId)
    {
        return deptMapper.deleteDeptById(deptId);
    }

    @Override
    public List<TreeSelect> selectCompanyDeptTreeList(SysDept dept) {
        Long companyId = SecurityUtils.getCompanyId();
        Long deptId = SecurityUtils.getDeptId();
        List<SysCompany> companyList = new ArrayList<>();
        List<SysDept> depts = new ArrayList<>();
        if (deptId == null  || SecurityUtils.isAdmin(SecurityUtils.getUserId())) {
            companyList = companyMapper.selectCompanyAndChild(companyId);
            List<Long> companyIds = companyList.stream().map(SysCompany::getId).collect(Collectors.toList());
            depts = deptMapper.selectByCompanyId(companyIds);
        } else {
            SysCompany sysCompany = companyMapper.selectById(companyId);
            companyList.add(sysCompany);
            List<SysDept> childrenDept = getAddUserDeptTrees(companyId);
            depts.addAll(childrenDept);
        }
        ListValuedMap<Long,SysDept> deptValueMap = new ArrayListValuedHashMap<>();
        for (SysDept sysDept : depts) {
            deptValueMap.put(sysDept.getCompanyId(),sysDept);
        }
        ListValuedMap<Long,SysCompany> companyValueMap = new ArrayListValuedHashMap<>();
        for (SysCompany sysCompany : companyList) {
            Long pid = sysCompany.getPid();
            if (sysCompany.getId().equals(companyId)) {
                pid = 0L;
            }
            companyValueMap.put(pid,sysCompany);
        }

        List<SysCompany> companyRoots = companyValueMap.get(0L);

        List<TreeSelect> resultList = new ArrayList<>();
        // 组件公司树
        for (SysCompany companyRoot : companyRoots) {
            TreeSelect treeSelect = new TreeSelect();
            treeSelect.setType("C");
            treeSelect.setId(companyRoot.getId());
            treeSelect.setLabel(companyRoot.getCompanyName());
            resultList.add(treeSelect);
            getChildCompany(treeSelect,companyValueMap,deptValueMap);
        }
        return resultList;
    }

    @Override
    public List<SysDept> getAddUserDeptTrees(Long companyId) {
        List<SysDept> depts = deptMapper.selectList(
                Wrappers.<SysDept>lambdaQuery()
                        .eq(SysDept::getCompanyId, companyId)
                        .eq(SysDept::getDelFlag, UserConstants.DEPT_NORMAL)
        );
        return depts;
    }

    @Override
    public SysDept findByDeptCode(String parentOcode) {
        SysDept sysDept = deptMapper.selectOne(
                Wrappers.<SysDept>lambdaQuery()
                        .eq(SysDept::getDeptCode, parentOcode)
                        .eq(SysDept::getDelFlag, UserConstants.DEPT_NORMAL)
        );
        return sysDept;
    }

    @Override
    public int setTGroup(Long deptId, String tGroup) {
        return deptMapper.update(null, Wrappers.<SysDept>lambdaUpdate().set(SysDept::gettGroup, tGroup)
                .eq(SysDept::getDeptId, deptId)
        );
    }

    private void getChildCompany(TreeSelect treeSelect, ListValuedMap<Long,SysCompany> companyValueMap, ListValuedMap<Long, SysDept> deptValueMap) {
        List<TreeSelect> childrenTree = new ArrayList<>();
        Long id = treeSelect.getId();

        List<SysDept> depts = deptValueMap.get(id);
        if (CollUtil.isNotEmpty(depts)) {
            depts.sort(Comparator.comparingInt(SysDept::getOrderNum));
            List<TreeSelect> treeSelects = buildDeptTreeSelect(depts);
            if (CollUtil.isNotEmpty(treeSelects)) {
                childrenTree.addAll(treeSelects);
            }
        }
        List<SysCompany> companies = companyValueMap.get(id);
        if (CollUtil.isNotEmpty(companies)) {
            companies.sort(Comparator.comparingInt(SysCompany::getCompanySort));
            for (SysCompany company : companies) {
                TreeSelect childSelect = new TreeSelect();
                childSelect.setType("C");
                childSelect.setId(company.getId());
                childSelect.setLabel(company.getCompanyName());
                childrenTree.add(childSelect);
                getChildCompany(childSelect,companyValueMap,deptValueMap);
            }
        }
        if (CollUtil.isNotEmpty(childrenTree)) {
            treeSelect.setChildren(childrenTree);
        }
    }

    /**
     * 递归列表
     */
    private void recursionFn(List<SysDept> list, SysDept t)
    {
        // 得到子节点列表
        List<SysDept> childList = getChildList(list, t);
        t.setChildren(childList);
        for (SysDept tChild : childList)
        {
            if (hasChild(list, tChild))
            {
                recursionFn(list, tChild);
            }
        }
    }

    /**
     * 得到子节点列表
     */
    private List<SysDept> getChildList(List<SysDept> list, SysDept t)
    {
        List<SysDept> tlist = new ArrayList<SysDept>();
        Iterator<SysDept> it = list.iterator();
        while (it.hasNext())
        {
            SysDept n = (SysDept) it.next();
            if (StringUtils.isNotNull(n.getParentId()) && n.getParentId().longValue() == t.getDeptId().longValue())
            {
                tlist.add(n);
            }
        }
        return tlist;
    }

    /**
     * 判断是否有子节点
     */
    private boolean hasChild(List<SysDept> list, SysDept t)
    {
        return getChildList(list, t).size() > 0;
    }
}
